CN115949988A - Electric heating device - Google Patents

Abstract

The application relates to an electric warming device, comprising: the fan blade is an axial flow fan blade, the blowing device drives airflow to flow along the second direction, and the fan blade is detachably arranged on the motor along the second direction. The electric heating device of the embodiment of the application has the advantage of conveniently cleaning the internal dust.

Description

Electric heating device

Technical Field

The application relates to the technical field of household appliances, in particular to an electric heating device.

Background

Along with the development of society, more and more use in family life of electric warming device, it generates heat through principle such as resistance, turns into the heat with the electric energy and then adjusts indoor ambient temperature.

At present, electric heating device is in the design process, owing to consider the power consumption safety, consequently design for non-detachably structure usually to lead to inside fan blade and wind channel to use to cause the dust to pile up after long-time. The electric heating device belongs to a heating type appliance, and dust accumulation easily causes the conditions of motor resistance increase, difficult heat dissipation and the like.

Disclosure of Invention

Based on this, this application embodiment provides an electric heating device to improve the difficult problem of clearing up of the inside dust of electric heating device.

The utility model provides an electric heating device, includes blast apparatus, blast apparatus includes motor and fan blade, the motor is axial fan, the fan blade is the axial fan blade, blast apparatus drives the air current along the second direction and flows, the fan blade sets up along second direction detachably on the motor.

In one embodiment, the electric warming device comprises a heating body, and the heating body is arranged on one side of the motor, which is far away from the fan blade along the second direction.

In one embodiment, the blowing device comprises a fixed frame; the motor is fixed on the fixing frame, and the fan blade and the heating body are respectively positioned on two sides of the fixing frame along the second direction; the rotating shaft of the motor extends along the second direction and is detachably connected with the fan blade.

In one embodiment, the fan blade comprises a central part and a plurality of blades, wherein the central part is coaxial with the rotating shaft and is detachably sleeved with the rotating shaft along the second direction;

a plurality of the blades are circumferentially arranged on the center portion.

In one embodiment, the blowing device comprises a deformation element, and the deformation element is arranged between the central part and the rotating shaft so as to improve the friction force between the central part and the rotating shaft.

In one embodiment, the deformation member is a snap spring.

In one embodiment, the center portion is formed with a connecting hole, the rotating shaft is provided with a positioning groove, the deformation member is arranged in the positioning groove and protrudes out of the rotating shaft along the radial direction, the connecting hole is inserted into the rotating shaft hole, and the deformation member abuts against the inner wall of the connecting hole.

In one embodiment, a first clamping portion is formed at the central portion, a second clamping portion is formed on the rotating shaft, and the second clamping portion is clamped with the first clamping portion; one of the first clamping part and the second clamping part is a clamping groove, and the other clamping part is a positioning block.

In one embodiment, the electric warming device comprises a housing and a cover;

the shell is provided with an accommodating cavity, and an open slot for communicating the accommodating cavity with the outside is formed;

the blowing device and the heating body are arranged in the accommodating cavity, and the fan blade is positioned on one side of the accommodating cavity close to the open slot;

the cover body is detachably arranged on the open slot.

In one embodiment, the top end of the cover body is provided with a fixing hole, and the upper side wall surface of the shell close to the opening groove is provided with a screw column matched with the fixing hole;

the bottom of lid is formed with third joint portion, the casing is close to the downside wall of open slot forms fourth joint portion, third joint portion with fourth joint portion joint cooperation.

In one embodiment, the housing comprises a first sub-housing and a second sub-housing; the first sub-shell is covered on the second sub-shell to form the accommodating cavity; a grid for gas circulation is formed on the first sub-shell; a grid for gas circulation is formed on the cover body; the screw column, the fourth clamping portion and the open slot are all arranged on the second sub-shell.

In one embodiment, the second sub-shell is bent inwards from the edge of the open slot to form a surrounding edge.

In one embodiment, the electric warming device comprises a plurality of the blowing devices arranged side by side along a first direction;

the heating body is arranged on one side of at least one blowing device along the second direction.

The beneficial effects are that: the electric heating device provided by the embodiment of the application is provided with the blowing device; the blowing device comprises a motor and fan blades, and the fan blades are detachably arranged on the motor along a second direction Y; when dust is accumulated in the electric heating device, the fan blades can be detached from the motor along the second direction Y, and therefore operators can clean the dust conveniently.

Drawings

Fig. 1 is a front view of an electric warming apparatus according to an embodiment of the present application;

fig. 2 is a front view of the electric warming device according to an embodiment of the present application, wherein the cover is omitted;

fig. 3 is a front view of the electric heating device according to an embodiment of the present application, wherein the cover and the fan blade are omitted;

FIG. 4 is a three-dimensional view of the structure of FIG. 3 from another perspective;

FIG. 5 is a side cross-sectional view of an electric warming apparatus according to an embodiment of the present application;

fig. 6 is a three-dimensional view of a fan blade according to an embodiment of the present application;

fig. 7 is a side sectional view of a fan blade according to an embodiment of the present application;

FIG. 8 is a right side view of the structure shown in FIG. 7;

fig. 9 is a side sectional view of a blowing device according to an embodiment of the present application;

FIG. 10 is an enlarged view of area A of FIG. 9;

FIG. 11 is a front view of a cover according to one embodiment of the present application;

FIG. 12 is a three-dimensional view of a cover according to an embodiment of the present application;

FIG. 13 is a front view of a second subcase according to an embodiment of the present application;

FIG. 14 is a block diagram of a second sub-housing of the present application from a first perspective;

FIG. 15 is a block diagram of a second perspective of a second sub-housing of the present application;

in the figure, the direction indicated by Y is the second direction of the present application, and the direction indicated by X is the first direction of the present application.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiment in many different forms than those described herein and those skilled in the art will be able to make similar modifications without departing from the spirit of the application and therefore the application is not limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment.

Referring to fig. 1 to 15, a first embodiment of the present application provides an electric heating apparatus, which includes: an air blowing device 100.

The blowing device 100 comprises a motor 110 and fan blades 120, the motor 110 is an axial flow fan, the fan blades 120 are axial flow fan blades, the blowing device 100 can blow airflow along a second direction Y, and the fan blades 120 are detachably arranged on the motor 110 along the second direction Y; the fan blade is convenient to disassemble by operators and convenient to clean internal dust.

In some embodiments, the electric warming device comprises: the heating element 200 is arranged at a side of the motor 110 departing from the fan blade 120 along the second direction Y.

Specifically, the fan blades 120 are detachably disposed on the motor 110 along the second direction Y; the fan blades 120 are driven by the motor 110 to rotate, so that airflow flowing is formed, the airflow can be electrified and heated after passing through the heating body 200, the temperature is raised, and the function of adjusting the temperature is realized. When the inside dust that has accumulated of electric heating device, fan blade 120 can follow second direction Y and dismantle from motor 110's pivot 111 (mention hereafter), and heat-generating body 200 arranges and deviates from one side of fan blade 120 at motor 110 along second direction Y to avoid fan blade 120 to take place to interfere with heat-generating body 200 at the in-process of dismantling, thereby make things convenient for operating personnel to clear up and dismantle the inside fan blade of electric heating device.

It should be noted that one side of the motor 110 departing from the fan blade 120 along the second direction Y may be an air inlet or an air outlet. That is to say, the air flow to be heated may be heated by the heating element 200 and then enter one side of the blowing device 100, and is blown out from the other side by being driven by the fan blade 120, so as to complete the corresponding electric heating function. In addition, the air flow to be heated may also enter one side of the blowing device 100, and is blown out from the other side by being driven by the fan blade 120, and is discharged after being heated by the heating body 200, thereby completing the corresponding electric heating function.

The heating element 200 may be a PTC heating element, a PTC heating bar, or the like.

In combination with the orientation shown in fig. 5, the second direction Y may be, but is not limited to, a horizontal direction, and in each embodiment of the present application, the second direction Y is described by taking the horizontal direction as an example, so that the heating element 200 and the fan blade 120 cooperate to complete the electric heating function of the electric heating device.

Optionally, the blowing device 100 and the heating element 200 are both provided with an independent on-off switch, so that a user can conveniently and independently turn on or off the corresponding blowing device 100 and the corresponding heating element 200, and thus, the heating or cooling function can be switched according to actual needs. Of course, the blowing device 100 and the heating element 200 may be configured with corresponding gear adjusting switches to correspondingly adjust the air volume intensity of the blowing device 100 and the heating intensity of the heating element 200.

Optionally, in some embodiments of the present application, the heat-generating body 200 has a plurality of circulation gaps through which the air flows, so that the corresponding air blowing devices 100 are respectively communicated with the heat-generating body 200, and the air flows are heated when stably flowing through the heat-generating body 200.

In some embodiments, referring to fig. 1 to 5, the blowing device 100 includes a fixing frame 130; the fixing frame 130 is generally a plastic or metal member with certain structural strength, such as aluminum, carbon steel, stainless steel, or ABS plastic, and the fixing frame 130 is fixed to the housing 300 (mentioned below), and the fixing frame 130 and the housing 300 may be connected by a snap connection or a bolt connection;

the motor 110 is fixed to the fixing frame 130, so that the motor 110 can be fixed inside the casing 300 through the fixing frame 130, and the motor 110 rotates to drive the fan blades 120 to rotate so as to push the airflow to flow through the casing 300; correspondingly, the heating element 200 is also fixed in the casing 300, when the airflow flows in the casing 300, the airflow can pass through the heating element 200 to obtain heating, and the high-temperature airflow is discharged by the rotation of the fan blade 120, so that the electric heating function is finally completed.

The fan blade 120 and the heating element 200 are respectively arranged at two sides of the fixing frame 130 along the second direction Y; so that the fan blade 120 can be far away from the heating element 200 along the second direction Y; the motor 110 includes a rotating shaft 111, and the rotating shaft 111 of the motor 110 extends along the second direction Y and is detachably connected to the fan blade 120.

In the present embodiment, the axial direction of the rotating shaft 111 is the second direction Y, and extends from the body of the motor 110 to the side away from the heating element 200.

A circumferential limit is arranged between the fan blade 120 and the rotating shaft 111 to prevent the fan blade 120 and the rotating shaft 111 from rotating relatively abnormally in the rotation process of the blowing device 100. The circumferential limit can be realized by arranging a positioning key, a pin and other structures; circumferential limiting can also be realized by arranging the rotating shaft 111 with a square or triangular cross section; and will not be described in detail herein.

In addition, a limit is provided between the fan blade 120 and the rotating shaft 111 along the axial direction, that is, along the second direction Y; the fan blades 120 are detachably connected with the rotating shaft 111, that is, the axial limit between the fan blades 120 and the rotating shaft 111 can be cancelled under the action of external force, so that the fan blades 120 and the rotating shaft 111 are separated axially.

Specifically, under the condition that the electric heating device normally works, both have circumference spacing between fan blade 120 and the pivot 111, also have along axial spacing, fan blade 120 is rotatory under the drive of pivot 111 to form the air current and flow, but the air current passes through behind the heat-generating body 200 ohmic heating, promotes the temperature, thereby realizes the function of temperature regulation. When dust is accumulated inside, the axial limit can be cancelled by external force, so that the fan blades 120 can be detached from the rotating shaft 111 of the motor 110 along the axial direction, and the cleaning is convenient.

Alternatively, the fixing frame 130 may be a hollow plate, a rod, a fixing screw, or the like.

Optionally, the fixed frame 130 may be erected between the motor 110 and the heating element 200; in some embodiments, the body of the motor 110 may be directly threaded onto the fixing frame 130; in other embodiments, the body of the motor 110 and the heating element 200 may also be located on the same side of the fixing frame 130 along the second direction Y, the rotating shaft 111 penetrates through the fixing frame 130 along the second direction Y, and the fan blade 120 is located on the other side of the fixing frame 130 along the second direction Y; the design is the standard.

In some embodiments, as shown in fig. 5-10, the fan blade 120 includes a central portion 121 and a plurality of blades 122. The central portion 121 is coaxial with the rotation shaft 111 and detachably sleeved along the second direction Y.

The central portion 121 may be formed as a sleeve structure, so as to be sleeved on the outer side of the rotating shaft 111, and the two are adapted to the shape of the sleeve structure through the shape of the rotating shaft 111, and can keep circumferential fixation and axial limitation after being plugged.

A plurality of blades 122 are circumferentially arranged on the center portion 121. Under the condition that the electric heating device normally works, along with the rotation of the motor 110, the rotating shaft 111 drives the central part 121 to rotate through circumferential limiting, so that the plurality of blades 122 are driven to rotate along the clockwise or counterclockwise direction, and the air flows to form air flow; the air current can be electrified and heated after passing through the heating body 200, so that the temperature is raised, and the function of adjusting the temperature is realized. When dust is accumulated inside, the axial limit can be cancelled by external force, so that the central part 121 can be detached from the rotating shaft 111 along the axial direction, and dust cleaning is facilitated.

In some embodiments, referring to fig. 9 and 10, the blowing device 100 includes a deformation member 140, and the deformation member 140 is disposed between the central portion 121 and the rotating shaft 111 to improve the friction between the central portion 121 and the rotating shaft 111. Like this, through the frictional force when increase central part 121 cup joints with pivot 111, under the condition of electric heating device normal work, it is spacing to form the axial through great frictional force between fan blade 120 and the pivot 111, prevents to appear along the condition of axial separation. When dust is accumulated inside, the friction force generated by the deformation member 140 can be overcome by external force, and further the axial limit between the fan blade 120 and the rotating shaft 111 is eliminated, so that the fan blade 120 can be axially detached from the rotating shaft 111 of the motor 110, and the cleaning is convenient.

Optionally, the deformation element 140 is a clamping bead; has the advantages of simple structure and convenient maintenance.

In some embodiments, referring to fig. 7 and 8, the central portion 121 is formed with a connection hole 125, the rotation shaft 111 is provided with a positioning groove 112, the deformation element 140 is disposed in the positioning groove 112 and protrudes from the rotation shaft 111 in a radial direction, the connection hole 125 is inserted into the hole of the rotation shaft 111, and the deformation element 140 abuts against an inner wall of the connection hole 125.

The deformation member 140 may be a snap spring; the middle part of the central part 121 is recessed inwards along the second direction Y to form a connecting hole 125, by setting the width of the snap spring, when the deformation member 140 is arranged in the positioning groove 112, the outer edge of the deformation member can protrude out of the outer peripheral surface of the rotating shaft 111 along the radial direction, the connecting hole 125 is sleeved outside the rotating shaft 111, thus, the inner wall of the connecting hole 125 presses the snap spring to deform, and the corresponding snap spring can provide a rebound force, so that the deformation member 140 can abut against the inner wall of the connecting hole 125 along the radial direction, thereby obtaining an acting force for compressing between the central part 121 and the rotating shaft 111, and when the central part 121 and the rotating shaft 111 have a tendency of moving along the second direction Y along the axial direction, the deformation member 140 can form a friction force along the axial direction between the central part 121 and the rotating shaft 111, thereby preventing the situation of separation along the axial direction.

When dust is accumulated inside, the friction force generated by the deformation member 140 can be overcome by external force, and further the axial limiting between the fan blade 120 and the rotating shaft 111 is cancelled, so that the fan blade 120 can be axially detached from the rotating shaft 111 of the motor 110, and the cleaning is convenient.

Optionally, the central portion 121 may be made of plastic or aluminum, iron alloy, or other materials with a certain friction coefficient, so as to improve friction force and ensure an axial limiting effect.

Optionally, the central portion 121 is hollowed in the circumferential direction to form a process groove 123; therefore, the overall weight of the fan blade 120 can be reduced on the premise of ensuring the strength of the fan blade 120, and the energy consumption efficiency of the electric heating device is improved.

In some embodiments, referring to fig. 7 to 10, the central portion 121 is formed with a first clamping portion 124, the rotating shaft 111 is formed with a second clamping portion 113, and the second clamping portion 113 is clamped with the first clamping portion 124; so that the central portion 121 and the rotation shaft 111 can be snap-coupled in the second direction Y.

One of the first engaging portion 124 and the second engaging portion 113 is a slot, and the other is a positioning block. The central part 121 is connected with the rotating shaft 111 in a buckling manner along the second direction Y, so that axial limiting can be provided for the central part 121 and the rotating shaft 111; preventing the occurrence of a situation of separation in the axial direction.

Specifically, taking the first clamping portion 124 as a positioning block as an example, the first clamping portion 124 may be an annular rib or an arc-shaped segment; the second clamping portion 113 is a clamping groove, and the width and depth of the clamping groove should be adapted to the clamping groove, and then the second clamping portion 113 specifically can be an annular groove or an arc-shaped groove, so as to be embedded into the first clamping portion 124 conveniently, and thus the detachable connection between the fan blade 120 and the rotating shaft 111 is realized.

Optionally, the first clamping portion 124 has a wedge-shaped guide surface 1241 on the side facing the motor 110 for easy clamping.

It should be understood that the deformation element 140 and the central portion 121 are configured to form the first engaging portion 124, and the rotating shaft 111 is configured to form the second engaging portion 113, which may be implemented alternatively or simultaneously, and provide a detachable axial position limitation for the blades 120 and the rotating shaft 111.

In some embodiments, referring to fig. 1 to 5, and 11 to 15, the electric heating device includes a housing 300 and a cover 400.

The housing 300 has a receiving cavity 310; the housing 300 is formed with an opening groove 320 for communicating the accommodating chamber 310 with the outside, and the cover 400 is detachably covered on the opening groove 320.

Thus, the cover 400 covers the opening groove 320, so as to seal the accommodating cavity 310 to a certain extent, and prevent the blowing device 100 and the heating element 200 from being exposed to the external environment, thereby playing a role in preventing dust and water for the blowing device 100 and the heating element 200.

The blowing device 100 and the heating element 200 are sequentially disposed in the accommodating cavity 310 along the second direction Y, and the fan blade 120 is located at one side of the accommodating cavity 310 close to the open slot 320. Specifically, the fixing frame 130 is fixed in the accommodating cavity 310 by bolts, welding, and the like; the heating body 200, the motor 110 and the fan blade 120 are sequentially arranged in the accommodating cavity 310 along the second direction Y; with such arrangement, when dust is accumulated in the electric heating device, the cover 400 can be taken down firstly, so that the open slot 320 is exposed, the fan blade 120 is positioned at one side close to the open slot 320, so that an operator can conveniently cancel the axial limit between the fan blade 120 and the rotating shaft 111 through external force, the fan blade 120 can be axially detached from the rotating shaft 111 of the motor 110, and the accommodating cavity 310 is taken out from the open slot 320, so that the heating element 200 with more circuits is avoided, and the safety is ensured; after the fan blade 120 is detached, the inside of the housing 300 and the air duct around the fan blade 120 can be cleaned, and the cover 400 can be cleaned separately.

Optionally, the housing 300 may be rectangular, and a corresponding handle may be disposed on the housing 300, so as to facilitate the overall transfer of the electric heating device by a user.

In some embodiments, as shown in FIGS. 1-4 and 11-15; the top end of the cover 400 is provided with a fixing hole 410, and the upper side wall surface of the housing 300 close to the opening groove 320 is formed with a screw column 330 engaged with the fixing hole 410. The fixing hole 410 is bolted to the screw post 330 to fix the top end of the cover 400 to the upper side of the opening groove 320.

The bottom end of the cover 400 is formed with a third clamping portion 420, the lower side wall surface of the casing 300 close to the opening groove 320 is formed with a fourth clamping portion 340, and the third clamping portion 420 is in clamping fit with the fourth clamping portion 340.

One of the third engaging portion 420 and the fourth engaging portion 340 is a slot, and the other is a positioning block adapted to the slot. The third engaging portion 420 is inserted into the fourth engaging portion 340, so that the bottom end of the cover 400 is fixed to the lower side of the opening groove 320.

In this way, the cover 400 can be covered on the opening groove 320 to form the relatively sealed accommodating cavity 310; the blowing device 100 and the heating element 200 are prevented from being exposed to the external environment, so that the blowing device 100 and the heating element 200 are prevented from dust and water.

Under the condition that the electric heating device normally works, the fan blade 120 and the rotating shaft 111 are fixedly connected, the fan blade 120 is driven by the rotating shaft 111 to rotate, so that airflow flows, the airflow flows in the accommodating cavity 310, and the airflow can be heated after passing through the heating body 200, so that the temperature is raised, and the airflow is discharged indoors to realize the function of adjusting the temperature. When the dust has accumulated inside the electric heating device, the fixing hole 410 and the bolt of the screw column 330 can be unscrewed firstly, the third clamping part 420 and the fourth clamping part 340 are separated along the inserting direction, so the cover body 400 can be taken down, and the opening groove 320 is exposed, the fan blade 120 and the rotating shaft 111 can be cancelled by an operator through external force along the axial limit, the fan blade 120 is detached from the rotating shaft 111 of the motor 110 along the axial direction, and the accommodating cavity 310 is taken out from the opening groove 320, so the fan blade 120 can be cleaned independently, the inside of the shell 300 and the air duct at the periphery of the fan blade 120 can be cleaned after the fan blade 120 is detached, and the cover body 400 can be cleaned independently.

It is understood that the assembly sequence of the cover 400, the housing 300 and the fan blade 120 is opposite to that described in the previous section, and the description is omitted here.

In some embodiments, referring to fig. 1-5, and 13-15, housing 300 includes a first sub-housing 350 and a second sub-housing 360; the first sub-housing 350 is housed in the second sub-housing 360 to form the receiving chamber 310.

The first sub-shell 350 and the second sub-shell 360 are detachably connected along the second direction Y to facilitate assembly and disassembly; the fixing frame 130 can be fixed on one of the first sub-shell 350 and the second sub-shell 360 by means of bolts, welding and the like, and after the first sub-shell 350 and the second sub-shell 360 are fixedly connected, the fixing frame 130 is fixed in the accommodating cavity 130; similarly, the heating element 200, the motor 110 and the fan blade 120 are sequentially disposed in the accommodating cavity 310 along the second direction Y.

By dividing the housing 300 into two parts for processing and manufacturing, the processing difficulty is effectively reduced. The first sub-shell 350 and the second sub-shell 360 can be manufactured by a metal plate stamping or injection molding integrated forming process. The screw column 330, the fourth clamping portion 340 and the opening groove 320 are arranged on the second sub-shell 360; thus, the connection and the disconnection of the second sub-housing 360 and the cover 400 can be achieved.

Optionally, a grid for gas to flow through is formed on the first sub-shell 350; a grill for circulating gas is formed on the cover 400; thus, an air inlet grille and an air outlet grille are formed at two opposite sides of the housing 300.

The setting up of air-inlet grille and air-out grid can guarantee the great amount of wind of introducing of blast apparatus 100 on the one hand, and the direction of the warm braw or the cold wind that blows out of stable blast apparatus 100 improves electric heating device's heating efficiency, and on the other hand avoids external foreign matter to touch blast apparatus 100 and heat-generating body 200, only makes the air current through the air-inlet grille get into hold the chamber 310 in to discharge from the air-out grille after the heat-generating body 200 heating, thereby realize temperature regulation's function.

In some embodiments, as shown in fig. 13 to 15, the second sub-housing 360 is bent inward from the edge of the open slot 320 to form a surrounding edge 370; so, can make things convenient for electric heating device's electric wire to arrange along surrounding edge 370, isolate with electric elements on every side to guarantee the electric safety problem that the user used, also can conveniently wash.

In some embodiments, as shown in fig. 1 to 5, the electric warming device comprises a plurality of blowing devices 100 arranged side by side along a first direction X; the heat generating body 200 is disposed at one side of at least one blowing device 100 in the second direction Y.

The first direction X intersects the second direction Y. The first direction X may be, but is not limited to, a vertical direction, and preferably a vertical direction, thereby saving an installation space of the plurality of blowing devices 100 to a large extent. The intersection of the first direction X and the second direction Y means that the first direction X and the second direction Y form a certain angle, the angle is greater than 0 degree and less than or equal to 90 degrees, and the first direction X and the second direction Y are preferably perpendicular to each other, so that the electric warming device is compact in overall structure, and a plurality of blowing devices 100 and heating bodies 200 can be arranged in a certain space.

The heating body 200 has at least one so that the air current introduced by at least one blowing device 100 forms warm air under the heating action of the heating body 200 to be blown out.

The electric heating device of this application is through setting up a plurality of blast apparatus 100 side by side, and set up heat-generating body 200 in one side of at least one blast apparatus 100, utilize the cooling wind that blast apparatus 100 provided, realize the cooling effect, utilize the function of generating heat of heat-generating body 200, make corresponding blast apparatus 100 blow out the warm braw, realize the heating function, so, make this electric heating device have heating function and cooling function concurrently, the rate of utilization and the functionality of product have been improved, also effectively avoided the long-time idle of product, reduce clean maintenance cost.

Optionally, as shown in fig. 1 to 15, the electric warming device further includes a base 500, and the housing 300 is supported at the bottom of the base 500 along the first direction X; base 500 can rotate around first direction X for casing 300 to the air-out direction of adjustment electric warming device improves and uses experience.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (13)

1. An electric warming device, characterized in that, the electric warming device includes:

the fan blade device comprises a blowing device (100), wherein the blowing device (100) comprises a motor (110) and fan blades (120), the motor (110) is an axial flow fan, the fan blades (120) are axial flow fan blades, and the fan blades (120) are detachably arranged on the motor (110) along a second direction (Y).

2. The electric warming apparatus according to claim 1, wherein the electric warming apparatus comprises a heat generating body (200), and the heat generating body (200) is disposed on a side of the motor (110) away from the fan blade (120) along the second direction (Y).

3. The electric warming device according to claim 2, wherein the blowing device (100) comprises a fixed frame (130);

the motor (110) is fixed on the fixing frame (130), and the fan blade (120) and the heating body (200) are respectively positioned on two sides of the fixing frame (130) along the second direction (Y);

and a rotating shaft (111) of the motor (110) extends along the second direction (Y) and is detachably connected with the fan blade (120).

4. The electric warming device according to claim 3, wherein the fan blade (120) comprises a central portion (121) and a plurality of blades (122), the central portion (121) is coaxial with the rotating shaft (111) and is detachably sleeved along the second direction (Y);

a plurality of the blades (122) are arranged on the center portion (121) in the circumferential direction.

5. The electric warming apparatus according to claim 4, wherein the blowing apparatus (100) comprises a deformation member (140), the deformation member (140) being disposed between the central portion (121) and the rotation shaft (111) to increase a friction force of the central portion (121) and the rotation shaft (111).

6. The electric warming device according to claim 5, wherein the deformation member (140) is a circlip.

7. The electric warming device according to claim 5, wherein the central portion (121) is formed with a connecting hole (125), the rotating shaft (111) is provided with a positioning groove (112), the deformation member (140) is disposed in the positioning groove (112) and protrudes from the rotating shaft (111) along a radial direction, the connecting hole (125) is inserted into the hole axis of the rotating shaft (111), and the deformation member (140) abuts against an inner wall of the connecting hole (125).

8. The electric warming device according to claim 4, wherein the central portion (121) is formed with a first clamping portion (124), the rotating shaft (111) is formed with a second clamping portion (113), and the second clamping portion (113) is clamped with the first clamping portion (124);

one of the first clamping portion (124) and the second clamping portion (113) is a clamping groove, and the other is a positioning block.

9. The electric heating device according to any one of claims 2 to 8, characterized in that it comprises a housing (300) and a cover (400);

the shell (300) is provided with a containing cavity (310) and is provided with an opening groove (320) which is communicated with the containing cavity (310) and the outside;

the blowing device (100) and the heating body (200) are arranged in the accommodating cavity (310), and the fan blade (120) is positioned on one side of the accommodating cavity (310) close to the open groove (320);

the cover body (400) is detachably covered on the opening groove (320).

10. The electric warming device according to claim 9, wherein a fixing hole (410) is formed at a top end of the cover body (400), and a screw post (330) engaged with the fixing hole (410) is formed on an upper side wall surface of the housing (300) adjacent to the opening groove (320);

the bottom of lid (400) is formed with third joint portion (420), casing (300) are close to the downside wall of open slot (320) forms fourth joint portion (340), third joint portion (420) with fourth joint portion (340) joint cooperation.

11. The electric heating device according to claim 10, characterized in that the housing (300) comprises a first sub-shell (350) and a second sub-shell (360); the first sub-shell (350) is covered on the second sub-shell (360) to form the accommodating cavity (310);

a grid for gas circulation is formed on the first sub-shell (350);

a grid for gas circulation is formed on the cover body (400);

the screw post (330), the fourth clamping portion (340) and the opening groove (320) are all arranged on the second sub-shell (360).

12. The electric warming apparatus according to claim 11, wherein the second sub-housing (360) is bent inward from the edge of the opening groove (320) to form a surrounding edge (370).

13. Electric warming device according to any one of claims 2 to 8, characterised in that it comprises a plurality of said blowing means (100) arranged side by side along a first direction (X);

the heating body (200) is arranged on one side of at least one of the blowing devices (100) in the second direction (Y).

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